hypnosec writes: Unauthorized access attempt of Yahoo! Japan portal may have led to theft of up to 22 million user IDs, Yahoo has revealed. There has been no information about leaks of such a massive database of user IDs as yet and according to Yahoo, the information that was stolen didn’t have passwords or any other information that would allow unauthorized users to carry out user identity verification. Yahoo hasn’t ruled out the possibility of a leak though considering the volume of traffic it noticed flowing from its servers to external entities.
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